Question

How is adp converted to atp?

1) by the addition of one adenas molecule
2) by the addition of one phosphate group
3) by the removal of one adena molecule
4) by the removal of one phosphate group

Answer 1

ADP is converted to ATP through phosphorylation, which involves the addition of a phosphate group and requires energy input to form a high-energy bond.

Step-by-step explanation:

ADP is converted to ATP by the addition of one phosphate group. This process is called phosphorylation and requires a significant amount of energy. The phosphate groups in ATP and ADP are negatively charged, which creates a repelling force making these molecules unstable. When ATP is hydrolyzed, breaking the bond between the phosphate groups, energy is released; this is a dephosphorylation process. However, to convert ADP back to ATP, energy must be invested to add a phosphate group to ADP, this forms the high-energy bond that stores energy within the ATP molecule.